Typescript, map() method, interfaces?

Question

typescript

Hello.
Wrote an interface, initialized an array of objects using it. Now I'm trying to iterate it with the map() method. But I am getting an error

Property 'map' does not exist on type 'Itemp'.ts(2339)

apparently you need to register it in the interface, although I can be wrong of course.
I tried to find an answer on the net, but there are only examples on primitives, which did not help me much.
The code itself:

interface Itemp {
  [index: number]: { x: number; y: number };
}

const temp: Itemp = [{ x: 1, y: 2 }, { x: 3, y: 4 }, { x: 5, y: 6 }];

const temp2: any = temp.map((item: { x: number; y: number }) => item);

Answer 1

interface ItempElement {
  x: number;
  y: number;
};

interface Itemp extends Array<ItempElement> {};